1,1'-Carbonyldiimidazole → HCID 86615482, compound

Participants

Reaction Steps

The product from Example 11a (50.5 mg, 0.125 mmol) was reacted with 1,1′-carbonyldiimidazole (40.8 mg, 0.215 mmol) in 2 mL of DMF under an atmosphere of N2 for 30 min. Added N,O-dimethylhydroxylamine hydrochloride (25 mg, 0.215 mmol) and stirred ate room temperature for 24 h. The solvent was concentrated under vacuum giving the title compound. After purification of the crude product by HPLC with AA the product was isolated as the free base (12 mg, 21%). 1H NMR (300 MHz, DMSO-D6) δ ppm: 2.23 (s, 3H) 2.67 (s, 3H) 2.89 (s, 3H) 3.39 (s, 3H) 6.86 (s, 1H) 6.91-7.04 (m, 1H) 7.15-7.35 (m, 7H) 7.44 (d, J=8.46 Hz, 1H) 8.34 (d, J=8.09 Hz, 1H) 8.67 (s, 1H); MS (ESI+) m/z 445 (M+H)+, 467 (M+Na)+, MS (ESI−) m/z 443 (M−H)−.

Provenance & Evidence